I guess this means you were unhappy with the default scale
Thanks for making this. I'll include scale option with one little change - scale range from 30 to 200 %.

PS.
Any suggestions about adding new options are welcome. Still their realization may take some time because I have an ability to work with the addon only on weekend for something like next 2 weeks.
Feel free to make modifications.

then my fps dropped from 60 to 5 and the microbar had changed position.

Can you provide any additional info? LUA errors for example. I'll try to reproduce your problem.

UPD. I think I've found it. After 3 random dungeons there were a bunch of errors. Testing fix attempt for this kind of problem right now. So if no errors pops up withing next hour I'll upload that fix here.

UPD2. Didn't work. I'll think about this tomorrow then. And I still want to see error text if there is any.

Yep I know that and I don't personally use this bar.
But I'm tired of tons of forum posts witch requested it from Elv (or asking where is this bar now) after he clearly said he wouldn't make it. People asked it so they can come here and get it.
Hope this will make forums a bit more clear.